GB2556302A - Control for electric power steering - Google Patents

Control for electric power steering

Info

Publication number
GB2556302A
GB2556302A GB1803066.8A GB201803066A GB2556302A GB 2556302 A GB2556302 A GB 2556302A GB 201803066 A GB201803066 A GB 201803066A GB 2556302 A GB2556302 A GB 2556302A
Authority
GB
United Kingdom
Prior art keywords
inverter
electric power
control
provide power
steering
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
GB1803066.8A
Other versions
GB201803066D0 (en
GB2556302B (en
Inventor
Terdy Tamas
Mahendhrarajah Charles
Kudanowski Maciej
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TRW Ltd
Original Assignee
TRW Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by TRW Ltd filed Critical TRW Ltd
Publication of GB201803066D0 publication Critical patent/GB201803066D0/en
Publication of GB2556302A publication Critical patent/GB2556302A/en
Application granted granted Critical
Publication of GB2556302B publication Critical patent/GB2556302B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
    • B62D5/0457—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such
    • B62D5/0481—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such monitoring the steering system, e.g. failures
    • B62D5/0484—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such monitoring the steering system, e.g. failures for reaction to failures, e.g. limp home
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
    • B62D5/0457—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such
    • B62D5/046—Controlling the motor
    • B62D5/0463—Controlling the motor calculating assisting torque from the motor based on driver input
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
    • B62D5/0457—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such
    • B62D5/0481—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such monitoring the steering system, e.g. failures
    • B62D5/0487—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such monitoring the steering system, e.g. failures detecting motor faults

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Ac Motors In General (AREA)
  • Power Steering Mechanism (AREA)
  • Inverter Devices (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

A method of controlling an electric power assisted steering (EPS) apparatus comprises a plurality of inverter bridges each connected to a multi-phase motor configured to provide power assist to steering of a vehicle. After detection of a failure within one of said inverter bridges, the current flow within the faulty inverter bridge is controlled, and one or more of the other inverter bridges is used to provide power assistance. A control system for an electric power assisted steering (EPS) apparatus comprises a plurality of inverter bridges (14, 14') each connected to a multi-phase motor (12, 12') configured to provide power assist to steering of a vehicle, selection means for selectively operating switches (16, 18, 20, 22, 24, 26) in an inverter bridge in which a failure has been detected to control the current flow within the faulty inverter bridge, and control means for controlling one or more of the other inverter bridges to provide power assistance in accordance with the method.
GB1803066.8A 2015-07-27 2016-07-26 Control for electric power steering Active GB2556302B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB1513200.4A GB201513200D0 (en) 2015-07-27 2015-07-27 Control for electric power steering
PCT/GB2016/052280 WO2017017434A1 (en) 2015-07-27 2016-07-26 Control for electric power steering

Publications (3)

Publication Number Publication Date
GB201803066D0 GB201803066D0 (en) 2018-04-11
GB2556302A true GB2556302A (en) 2018-05-23
GB2556302B GB2556302B (en) 2021-02-17

Family

ID=54106668

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB1513200.4A Ceased GB201513200D0 (en) 2015-07-27 2015-07-27 Control for electric power steering
GB1803066.8A Active GB2556302B (en) 2015-07-27 2016-07-26 Control for electric power steering

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB1513200.4A Ceased GB201513200D0 (en) 2015-07-27 2015-07-27 Control for electric power steering

Country Status (5)

Country Link
US (1) US11136062B2 (en)
CN (1) CN107921992B (en)
DE (1) DE112016002958T5 (en)
GB (2) GB201513200D0 (en)
WO (1) WO2017017434A1 (en)

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Also Published As

Publication number Publication date
GB201803066D0 (en) 2018-04-11
DE112016002958T5 (en) 2018-03-15
CN107921992A (en) 2018-04-17
US11136062B2 (en) 2021-10-05
US20180208238A1 (en) 2018-07-26
GB201513200D0 (en) 2015-09-09
WO2017017434A1 (en) 2017-02-02
GB2556302B (en) 2021-02-17
CN107921992B (en) 2022-02-15

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